<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>2007-9028</journal-id>
<journal-title><![CDATA[Ecosistemas y recursos agropecuarios]]></journal-title>
<abbrev-journal-title><![CDATA[Ecosistemas y recur. agropecuarios]]></abbrev-journal-title>
<issn>2007-9028</issn>
<publisher>
<publisher-name><![CDATA[Universidad Juárez Autónoma de Tabasco, Dirección de Investigación y Posgrado]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-90282023000100017</article-id>
<article-id pub-id-type="doi">10.19136/era.a10n1.3393</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Producción de metano in vitro y características fermentativas de gramíneas forrajeras templadas y tropicales]]></article-title>
<article-title xml:lang="en"><![CDATA[In vitro methane production and fermentative characteristics from temperate and tropical grasses]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rivas-Martínez]]></surname>
<given-names><![CDATA[Mayra Iliana]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cobos-Peralta]]></surname>
<given-names><![CDATA[Mario Antonio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ley-de Coss]]></surname>
<given-names><![CDATA[Alejandro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bárcena-Gama]]></surname>
<given-names><![CDATA[José Ricardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González-Muñoz]]></surname>
<given-names><![CDATA[Sergio Segundo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Colegio de Postgraduados  ]]></institution>
<addr-line><![CDATA[Montecillo Estado de México]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma de Chiapas  ]]></institution>
<addr-line><![CDATA[Villaflores Chiapas]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2023</year>
</pub-date>
<volume>10</volume>
<numero>1</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-90282023000100017&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-90282023000100017&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-90282023000100017&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen. El objetivo de esta investigación fue evaluar la producción in vitro de metano (CH4), dióxido de carbono (CO2), y variables fermentativas de gramíneas templadas y tropicales. El diseño experimental fue completamente al azar. La producción de biogás, CH4 y CO2 fue mayor en las gramíneas tropicales (199.20, 55.78, y 121.58 mL g materia seca (MS) comparada con las de clima templado (61.87, 26.6 y 52.9 mL g MS-1), respectivamente. La producción de ácidos grasos volátiles (AGV) (mmol L-1) fue mayor (P &lt; 0,05) en las gramíneas templadas. Sin embargo, la producción de ácido acético, precursor del CH4 fue mayor en las tropicales. El pH y la población de bacterias ruminales fueron similares entre gramíneas. Conclusión: las gramíneas tropicales evaluadas incrementaron la producción de biogás por gramo de materia seca fermentada, la cantidad de ácido acético y como consecuencia también se incrementó la producción de CH4.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract. The objective of this research was to evaluate in vitro methane (CH4) production, carbon dioxide (CO2), and fermentative variables from template and tropical grasses: The experiment was designed as a randomized complete design, CH4 and CO2 were higher in tropical grasses (199.20, 55.78, and 121.58 mL g Dry matter, DM) compared template grasses (61.87, 26.6 and 52.9 mL g DM-1 respectively). Volatile fatty acid production was highest (P &lt; 0,05) from template grasses. However, acetic acid production considered a precursor to CH4 was mayor from tropical grass. pH and total bacteria population were similar by grasses. The conclusions were: evaluated tropical grasses increased the biogas production per gram of dry matter fermented and acetic acid amount and consequently the methane production was incremented.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Fermentación entérica]]></kwd>
<kwd lng="es"><![CDATA[ganadería climáticamente inteligente]]></kwd>
<kwd lng="es"><![CDATA[gases efecto invernadero]]></kwd>
<kwd lng="es"><![CDATA[rumiantes]]></kwd>
<kwd lng="en"><![CDATA[Enteric fermentation]]></kwd>
<kwd lng="en"><![CDATA[climate-smart livestock]]></kwd>
<kwd lng="en"><![CDATA[greenhouse gases]]></kwd>
<kwd lng="en"><![CDATA[ruminants]]></kwd>
</kwd-group>
</article-meta>
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